Pi Backup script

#!/bin/bash
#
# Konstanten
#
BACKUP_PFAD="/media/hdd1/backup"
ANZAHL_BACKUPS="3"
BACKUP_NAME="MeinBackup"
STOP_SERVICES="service samba stop"
START_SERVICES="service samba start"
#
# Stoppe services
#
${STOP_SERVICES}
#
# Backup mit dd erstellen
#
dd if=/dev/mmcblk0 of=${BACKUP_PFAD}/${BACKUP_NAME}-$(date +%Y%m%d-%H%M%S).img bs=1MB count=4000
#
# Backup mit tar erstellen
#
#tar -cpz --one-file-system -f ${BACKUP_PFAD}/${BACKUP_NAME}-$(date +%Y%m%d-%H%M%S).tgz \
#            --exclude=${BACKUP_PFAD} \
#            --exclude=/proc \
#            --exclude=/lost+found \
#            --exclude=/sys \
#            --exclude=/mnt \
#            --exclude=/media \
#            --exclude=/dev \
#            /
#
# Starte services
#
${START_SERVICES}
#
# Loeschen alter Backups
#
pushd ${BACKUP_PFAD}; ls -tr ${BACKUP_PFAD}/${BACKUP_NAME}* | head -n -${ANZAHL_BACKUPS} | xargs rm; popd